Entanglement amplification of fermionic systems in an accelerated frame

Kwon, Younghun; Chang, Jinho

doi:10.1103/physreva.86.014302

Cited by 8 publications

(8 citation statements)

References 12 publications

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“…A similar entanglement amplification is reported for fermionic system in Ref. [11]. There are a number of other good papers on the dynamics of entanglement in accelerated frames which can be found in the list [12].…”

Section: Introductionsupporting

confidence: 78%

Non-Maximal Tripartite Entanglement Degradation of Dirac and Scalar Fields in Non-Inertial Frames

Khan¹,

Khan²,

Khan³

2014

Commun. Theor. Phys.

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The π-tangle is used to study the behavior of entanglement of a nonmaximal tripartite state of both Dirac and scalar fields in accelerated frame. For Dirac fields, the degree of degradation with acceleration of both one-tangle of accelerated observer and π-tangle, for the same initial entanglement, is different by just interchanging the values of probability amplitudes. A fraction of both one-tangles and the π-tangle always survives for any choice of acceleration and the degree of initial entanglement. For scalar field, the one-tangle of accelerated observer depends on the choice of values of probability amplitudes and it vanishes in the range of infinite acceleration, whereas for π-tangle this is not always true. The dependence of π-tangle on probability amplitudes varies with acceleration. In the lower range of acceleration, its behavior changes by switching between the values of probability amplitudes and for larger values of acceleration this dependence on probability amplitudes vanishes. Interestingly, unlike bipartite entanglement, the degradation of π-tangle against acceleration in the case of scalar fields is slower than for Dirac fields.

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Section: Introductionsupporting

confidence: 78%

Non-Maximal Tripartite Entanglement Degradation of Dirac and Scalar Fields in Non-Inertial Frames

Khan¹,

Khan²,

Khan³

2014

Commun. Theor. Phys.

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“…From now on, for simplicity, the index will be omitted. It should be noted that the physical ordering of the fermionic system was recently introduced by [24][25][26][27][28]. The physical ordering of the fermionic system means that in order to obtain a physical result, the ordering should be rearranged as the form of particle and antiparticle in the separate regions.…”

Section: Accelerated Framementioning

confidence: 98%

Limitation to Communication of Fermionic System in Accelerated Frame

Chang

Kwon

2014

Int J Theor Phys

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In this article, we investigate communication between an inertial observer and an accelerated observer, sharing fermionic system, when they use classical and quantum communication using single rail or dual rail encoding. The purpose of this work is to understand the limit to the communication between an inertial observer and an accelerated observer, with single rail or dual rail encoding of fermionic system. We observe that at the infinite acceleration, the coherent information of single(or double) rail quantum channel vanishes, but those of classical ones may have finite values. In addition, we see that even when considering a method beyond the single-mode approximation, for the communication between Alice and Bob, the dual rail entangled state seems to provide better information transfer than the single rail entangled state, when we take a fixed choice of the Unruh mode. Moreover, we find that the single-mode approximation may not be sufficient to analyze communication of fermionic system in an accelerated frame.

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“…However, fifty years after the discovery of Bell's theorem, we still do not fully understand the relation between entanglement and nonlocality, although significant progress was made [24][25][26][27]. In particular, the most natural question is still open.…”

Section: Introductionmentioning

confidence: 95%

Quantum correlation versus Bell-inequality violation under the amplitude damping channel

Shi

et al. 2015

Physics Letters A

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Entanglement amplification of fermionic systems in an accelerated frame

Cited by 8 publications

References 12 publications

Non-Maximal Tripartite Entanglement Degradation of Dirac and Scalar Fields in Non-Inertial Frames

Non-Maximal Tripartite Entanglement Degradation of Dirac and Scalar Fields in Non-Inertial Frames

Limitation to Communication of Fermionic System in Accelerated Frame

Quantum correlation versus Bell-inequality violation under the amplitude damping channel

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